Braised Onion Sauce

Prep: 10 min Cook: 70 min Cuisine: Mediterranean

A rich, buttery onion sauce with a hint of sweetness and Madeira wine, perfect for pairing with pasta and topped with grated cheese for a comforting meal.

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Ingredients

  • 1/2 lb. unsalted butter
  • 1 1/2 lb. onions, peeled and sliced
  • 1 Tbsp. sugar
  • 1/4 c. Madeira wine
  • grated cheese
  • 3/4 to 1 lb. pasta

Instructions

  1. Melt the butter in a large skillet over medium heat.
  2. Add the sliced onions and cook until they are soft and transparent.
  3. Stir in the sugar; reduce heat and cook very slowly for about 1 hour.
  4. Stir in the Madeira wine; cook briefly.
  5. Pour the sauce over cooked pasta.
  6. Sprinkle with grated cheese before serving.

Tips & Substitutions

For a deeper flavor, consider using a mix of yellow and sweet onions. If you prefer a vegetarian version, substitute the butter with olive oil. To save time, you can use pre-sliced onions, but freshly sliced will enhance the sauce's texture. If Madeira wine is unavailable, dry sherry or white wine can be good alternatives. Stir occasionally to prevent sticking, especially during the slow cooking process.

Serving Suggestions

Serve this rich braised onion sauce over your favorite pasta, such as fettuccine or pappardelle, for a comforting meal. It pairs beautifully with grated cheese, like Parmesan or Pecorino Romano, for extra flavor. A simple side salad or some crusty bread, like Cracked Wheat Rolls, would complement this dish well, making it a delightful vegetarian option.

Storage & Reheating

Store any leftover braised onion sauce in an airtight container in the refrigerator for up to 3 days. To reheat, warm it gently on the stovetop over low heat, adding a splash of water or stock to loosen the sauce if needed. This sauce can also be frozen for up to 2 months; just thaw in the refrigerator before reheating.

Nutrition & Diet Analysis (per serving)

Each serving of Braised Onion Sauce contains roughly 236 calories, with 4g protein, 17g carbohydrates, and 18g fat. It is an excellent source of vitamin C (23% of the Daily Value), and a good source of vitamin A.

236 kcal 12% DV
Protein Fat Carbs

Macronutrients

Protein 4.1g 8% DV
Total Fat 18g 23% DV
Carbs 16.8g 6% DV
Fiber 2.6g 9% DV
Sugar 1.4g 3% DV

Electrolytes

Sodium 224.4mg 10% DV
Potassium 186mg 4% DV
Cholesterol 45.7mg 15% DV

Vitamins & Minerals

Vitamin A 145.4mcg 16% DV
Vitamin C 20.6mg 23% DV
Calcium 103.7mg 8% DV
Iron 0.5mg 3% DV
Diet fit Low-carb Under 400 cal
Contains Milk Wheat/Gluten

Estimated from ingredients & per-serving nutrition — verify against package labels for allergies or strict diets.

* % Daily Values based on a 2,000 calorie diet (FDA 2020).

Frequently Asked Questions

Can I make this sauce ahead of time?

Yes, you can prepare the braised onion sauce ahead of time. After cooking, let it cool completely and store it in the fridge for up to 3 days or freeze it for longer storage. Reheat it gently on the stovetop when you're ready to serve.

What types of pasta work best with this sauce?

While you can use any pasta, wider noodles like pappardelle or fettuccine hold the sauce well, allowing for an even distribution of flavor. You can also try it with whole wheat or gluten-free pasta for a different twist.

How can I enhance the flavor of the sauce?

To enhance the flavor, consider adding herbs like thyme or rosemary during the cooking process. A splash of balsamic vinegar can also add depth. If you enjoy Mediterranean recipes, pairing this sauce with olives or sun-dried tomatoes can elevate the dish even further.

Nutrition is estimated from USDA FoodData Central ingredient data and may vary with brand, portion and preparation — see our methodology. This information is for general educational purposes only and is not medical or dietary advice (disclaimer).

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